Floor drain and trap.



PATENTED MAIL 6, 1906.

H; G.'GRADWOHL.,

FLOOR DRAIN AND TRAP APPLIOA'XION TILED JAN. 14. 1905.

UNITED sTA Es PATENT oFFIc-E.

Specification of Letters Patent.

Patented March 6, 1906.

Application filed January 14, 1905. Serial No. 241,107.

1'!) a wit/m1, 1' t may concern.-

Be it known that I, l [.uun'C. GRADWOHL, a citizen of the United States, residing in the city of St. Louis, in the State of Missouri, have invented certain. new and useful Improvements in Floor Drains andTraps, of which the following is a 1" ull, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a floor-drain trap that is adapted to be seated in the floor of the building to receive a constant supply of water from urinals, lavatories, or other appliances that are constantly in use and to which flow of water is constantly supplied.

The object of the invention is to provide for the maintenance in the trap of a sufficient quantity of water at all times to prevent the escape of fumes from the trap.

F1 are I is a to or plan view of my trap. Fig. II is a verticaldongitudinal section taken on line II II, Fig. I. Fig. III is a cross-section taken on line III III, Fig. II.

A designates a floor from which my trap is suspended and in which is an opening B, in which the upper part of the trap 18 seated.

1 designates a supporting-ring that is set into the floor so that its to surface is flush with the top surface of the oor. The rin 1 is recessed, and in its recess is positioned a strainer 2.

3 desi mates the basin of the trap, which is provider at its up er end with an annular flange 4, throu h t e medium of which the basin is detac ably and removably hun from the sizlpportin -ririg 1 by hanger-bolts 5, that exten throug the supporting ring and flange. The strainer 2 is detachably connected to the basin 3 by screws 6.

7 is a delivery-pipe connected to-the trapbasin, and 8 is'an outlet-pipe, also connected with said basin.

9 designates a seal-tube mounted within the basin 3 and having an open lower end that extends to a lower level within the basin than for the ready introduction and removal of the seal-tube when the strainer 2 is detached from the trap I use lugs 10, integral with the sealtube and extending inwardly therefrom and to which a spanner-bar may be fitted, as indicated by dotted lines, Fig. II. When such a spanner-bar is ap lied to the ln s, thesealtube may be rea ily unscrewed y twistin action in order that the tube may be lifte from the basin.

I claim as my invention In a floor-drain trap, the combination of a supporting-ring having an annular recess therein, a strainer seated in the recess of the ring, a basin having a screw-threaded upper part and provided with an annular flange detachably secured to the ring, inlet and outlet ipes connected to said basin, and a seal-tube liavin a screw-threaded upper end engagin with t e screw-threads on the up or part 0 the basin and havin its lower en open and extending downwar ly in said basin beyond said pipes; said seal-tubes being provided with spanner-receiving in s. HARRY C. GRADWOHL.

In presence of E. S. KNIGHT, M. P. SMITH. 

